13298455521 has 24 divisors (see below), whose sum is σ = 20700039360. Its totient is φ = 8178303456.

The previous prime is 13298455451. The next prime is 13298455523. The reversal of 13298455521 is 12555489231.

13298455521 is a `hidden beast` number, since 1 + 3 + 2 + 98 + 4 + 5 + 552 + 1 = 666.

It is not a de Polignac number, because 13298455521 - 2⁷ = 13298455393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13298455523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145950 + ... + 218856.

It is an arithmetic number, because the mean of its divisors is an integer number (862501640).

Almost surely, 2^13298455521 is an apocalyptic number.

It is an amenable number.

13298455521 is a deficient number, since it is larger than the sum of its proper divisors (7401583839).

13298455521 is a wasteful number, since it uses less digits than its factorization.

13298455521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74485 (or 74482 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The spelling of 13298455521 in words is "thirteen billion, two hundred ninety-eight million, four hundred fifty-five thousand, five hundred twenty-one".